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This image is an anaglyph in which a stereo image pair is combined into a single image using colour to separate the two views. To see the 3D stereo effect, you will need to use red green colour filter glasses (red for your left eye and green for your right eye). Such glasses can be obtained from your optometrist or specialty supplier. It is worth obtaining high quality anaglyphic glasses to achieve the best possible sense of depth. Cheap filters can often be found in novelty 3-D books. SEE HOW ANAGLYPHS ARE MADE.
Graphene is an hexagonal sheet of carbon atoms. Electrons easily travel along the carbon sheet making graphene an extremely good electrical conductor. The Nobel prize in physics has just been won as a result of making graphene (The 2010 Nobel Prize in Physics - Press Release).
The carbon atoms are shown as spheres drawn at their covalent radius (i.e. just touching). See other images of graphene.